Electric door-opener



' Wv V A ORNEYS.

a (mm J. SCHNEIDER.

ELEGTRIG DOOR OPENER.

No. 538,127. Patented Apr. 23, 1895.

. I i a WITNESS-E8:

INVENTQI? UNITED ,STATES' PATENT OFFIC JOHN SCHNEIDER, OF LONG ISLANDCITY, NEW YORK.

ELECTRIC DOOR-OPEN ER.

SPECIFICATION forming part of Letters Patent No. 538,127, dated April23, 1895.

Application filed May '7, 1894- Serlal No. 510.271. (No model.)

To all whom it may concern.-

Be it known that I, JOHN SCHNEIDER, a citizen of the United States, anda resident of Astoria, (Long Island City,) in the county of Queens andState of New York, have invented certain new and useful Improvements inElectric Door-Openers, (Case No. 3,) of which the following is aspecification.

The invention relates to electric door openers, such as is shown anddescribed in the Letters Patent of the United States, No. 381,725,granted to me on the 24th day of April, 1888.

The object of the invention is to provide a new and improved electricdoor opener, which is comparatively simple and durable in construction,not liable to get out of order, and arranged for unlocking a door from adistance by means of an electric current.

The invention consists of certain parts and details and combinations ofthe same, as will be fully described hereinafter and then pointedout inthe claim.

Reference is to be had to the accompanying drawings, forming apart ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 is a face view of theimprovement. Fig. 2 is a side elevation ofthe same, with the front cover of the casing removed. Fig. 3 is a likeview of the same, with the parts in a different position and part of thecasing in section. Fig. 4 is a rear side elevation of the improvementwith the rear cover removed and parts in section. Fig. 5 is an invertedsectional plan View of the improvement as applied, the section beingtaken on the line 5-5 of Fig. 3; and Fig. 6 is a sectional plan view ofthe same on the line 66 of Fig. 3.

In the drawings, A represents the casing adapted to be set in the doorframe B, as indicated in Figs. 5 and 6.

0 represents a catch mounted to swing on a vertical pivot F at one sideof the casing and actuated by a spring F coiled on said pivot andconnected to the casing as clearly seen in Figs. 2 and 5. This catch 0is adapted to engage a bolt D, mounted in a lock on the door E in theusual manner, and on its rear face, the catch is provided with a tail 0,projecting obliquely toward the side of the casing opposite that atwhich the catch 0 is arranged, as seen in Fig. 5.

A rock-lever G is pivoted vertically closely adjacent to the oppositeside of easing A, and is provided with avertical groove or'notch Gadapted to receive the end of the tail 0 when the door is locked, and onthe side of said groove next to casing A with a stop or short projectionG adapted to prevent said tail from falling out of said groove in casethe parts should become worn. At the other side of said groove, the rocklever G is provided with a second stop in the nature of a finger G whichprojects out toward the other side of the ease, and is adapted to beengaged by the tail 0 of catch 0, so as to cause the rock lever G toturn or rock in unison with catch 0 when the magnetic devices areactuated as will be hereinafter described. At its lower end the rocklever G is provided with an arm G which projects forward below the catch0 and is adapted to be engaged at its extremity by the side edge of theupper arm H of an armature lever H, pivoted horizontally at H inthecasing in the field of the electro-magnet I. The armature lever H isnormally held away from said magnet I by a spring J, and the magnet isarranged ina circuit including a suitably located button, (not' shown)to be pressed where it is desired to close the circuit and unlock thedoor.

When the circuit is closed the magnet draws its armature lever H towardit in such a way as to disengage the side edge of the upper arm Hthereof from the end of arm G of rock lever G, so that said rock leverwill be free to turn or rock by the engagement of tail 0 with the fingerG on said lever. To insure the door opening where unlocked, it isusually provided with a spring-hinge of any preferred construction.

When the door has been opened and its bolt D disengaged from the catch 0the spring F will act to swing said catch to its locked position, andthe tail 0 thereon will by its engagement with the finger or projectionGr again turn or rock the lever so as to cause its arm G to wipe overthe arm H of the armature lever H, and be again locked behind the sideedge thereof. A stop K is arranged in the casing to limit the movementof the armature lever H.

The door opener constructed as above set forth is exceedingly simple andinexpensive having comparatively few parts and these be ing so arrangedas to attain a maximum strength in the finished device. The constructionis also very durable and not liable 5 to derangement.

Having thus described my invention, I

claim- In an electric door opener, in combination, a casing,a magnet, anarmaturelever, a rockio lever pivoted in the casing and adapted whenmoved in one direction to be engaged and held against movement by thearmature lever, and when moved in the other direction to be out ofposition to be engaged by the t5 armature-lever, a catch mounted toswing in the casing and adapted to be engaged by a bolt on the door, atail on the catch, and stops on the rock-lever projecting therefrom andadapted to engage opposite faces of the tail, one stop being adapted tobe engaged and moved by the tail of the catch, when the armature-leveris disengaged from the rock-lever, to move the rock-lever out ofposition to be engaged by the armature-lever, and the other stop beingadapted to be engaged and moved by the tail of the catch to move therock-lever into position to be engaged by the armature-lever,substantially as set forth.

In testimony that I claim the foregoing as my invention I have signed myname, in presence of two witnesses, this 4th day of May, 1894.

JOHN SCHNEIDER. [L.S.]

Witnesses:

ROBERT S. CIIAPPELL, EDWARD P. THOMPSON.

